#ifndef UTILS_H
#define UTILS_H

#include <iostream>
#include <GL/glut.h>
#include <assert.h>
#include <cmath>
#ifndef M_PI
#define M_PI 3.1415592
#endif //M_PI
class utils
{
    public:
        utils();
        virtual ~utils();
        GLvoid relRotat(GLfloat angle, GLfloat x, GLfloat y, GLfloat z, GLfloat p[]);
        GLvoid normalize(GLfloat v[]);
    protected:
    private:
};

#endif // UTILS_H
